package com.aefan.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.UUID;
import java.util.concurrent.TimeUnit;

/**
 * @Author: jxl
 * @Date: 2021/9/17 下午3:42
 */
@Service
public class PaymentService {

    public String paymentInfo_OK(Integer id){
        return "线程池："+Thread.currentThread().getName()+"    paymentInfo_OK，id："+id+"\t"+"😄o(n_n)o哈哈";
    }

    //服务降级 @HystrixCommand
    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler",commandProperties = {
            @HystrixProperty(name="execution.isolation.thread.timeoutInMilliseconds", value = "3000")
    })
    public String paymentInfo_Timeout(Integer id){
        int timeNumber = 5;
        try {
            TimeUnit.SECONDS.sleep(timeNumber);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池："+Thread.currentThread().getName()+"    paymentInfo_Timeout，id："+id+"\t"+"😭"+"    耗时："+timeNumber;
    }

    public String paymentInfo_TimeOutHandler(Integer id){
        return "线程池："+Thread.currentThread().getName()+"    系统繁忙，请稍后再试，id："+id+"\t"+"😭";
    }

    //---------服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback", commandProperties = {
            @HystrixProperty(name="circuitBreaker.enabled", value = "true"),//是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),//请求次数超过峰值，熔断器会从关闭将打开
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"),//事件窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"),//失败率达到多少跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id){
        if(id < 0) {
            throw new RuntimeException("##########id不能为负数");
        }
        String serialNumber = IdUtil.simpleUUID(); //UUID.randomUUID();
        return Thread.currentThread().getName()+"\t调用成功，流水号："+serialNumber;
    }

    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id){
        return "id不能为负数，请稍后再试，id："+id;
    }

}
